Pipe



Patented Nov. 3, 1942 s PIPEi Robert H. Owen, Everett, Wash.

Application October 15, 1941, Serial No. 415,118

1 Claim.

This invention relates to improvements in pipes.

An obje-ct of the invention is ,the provision of a pipe having a vertically disposed filtering chamber located between the pipe stem and the bowl and in communication with said bowl and stem, said chamber having one end closed with a cylindrical cap which carries a spirally arranged ltering and absorbent strand having the convolutions compressed to form a unit so that the unit will' be removable with the cap from the filtering chamber.

A further object of the invention is the provision of a pipe having an enlargement connecting the bowl with the stem, with .the enlargement being provided with a vertical chamber in communication with an enlarged passage in the stem providing a cooling chamber in said stem, said vertical chamber also being in communication with the bowl, a spirally arranged filtering and absorbent strand being compressed` to form a removable unit in this chamber and also providing a tortuous passage for the smoke between the bowl and the cooling chamber, the unit extending across the inner end of the cooling chamber for delivering the smoke.

This invention will be best understood from a consideration of the following detailed description, in view of the accompanying drawing forming a part of the specification, nevertheless, it is to be understood that the invention is not conned to the disclosure, being susceptible of such changes and modilications as define no material departure from the salient features of the inventio-n as expressed in the appended claim.

In the drawing: I

Figure 1 is a View in perspective of a pipe constructed according to the principles of my invention.

Figure 2 is a removable filtering and absorbing unit adapted to be inserted in a chamber in the pipe.

Figure 3 is a View in elevation of two forms of a filtering and absorbent strand which is adapted to be compressed to form a unit.

Figure 4 is a longitudinal vertical section of the pipe.

Figure 5 is an enlarged vertical section of one of the filtering strands.

Referring more particularly to the drawing, IS designates a bowl of a pipe having the usual combustion chamber I I and this bowl is extended to provide an enlargement as shown at I2. A stem IS extends from the enlargement in which is mounted a mouth-piece I 4.

The enlargement is provided with a vertical chamber generally designated by the numeral I5 and this chamber is closed at its top as shown at I6 and open at the bottom as indicated by the numeral I1. A conduit I8 connects the lower end of the bowl It) with the chamber I5.

A sleeve 29 has a closed end 2| and a passage 22 in line with the inner end of the conduit I8 so that the chamber Il in the bowl IB will be in communication with the vertical chamber I5. The upper end of the cylinder 20 terminates below the inner end of a cooling chamber 23, which is located horizontally within the stem I3. It will be noted that the cooling chamber has a considerably greater diameter than the usual passage 24 in the mouth-piece l.

A strand 25 is employed as a ltering and absorber in the chamber l5. The strand employed is a well-known pipe cleaner which consists of a pair of wires 25 and 2 which are twisted about each other for locking brous material together so that in effect the strand appears as a bendable and brous stem. The strand is bent into the form of convolutions similar to a coiled spring and these convolutions are compressed radially inwardly into a compact unit generally designated by the numeral 28 and forced into the cylinder 20 so that when the cylinder is removed from the chamber I 5 the ltering unit is likewise removed. Due to the fact that the convolutions are compressed radially inwardly they have a tendency to expand outwardly against the inside Walls of the sleeve, thereby holding the filtering element in place when the same is being inserted or removed.

Due to the various convolutions the smoke is forced through a tortue-us passage from the conduit I8 to the cooling chamber 23, and the strand not only lters out undesirable substances from the smoke, but it also removes moisture. When the unit becomes suiciently saturated it may be removed and another strand or strands can then be coiled and the convolutions are then compressed to neatly fit within the sleeve 25.

It will be seen by this construction that when the smoke is drawn from the chamber I I in the bowl I0 through the conduit i8 it will pass through the convolutions of the absorbent material on the wires 25 and 21, where undesirable ingredients will be removed and the smoke will then leave the upper end of the unit 28 and enter the cooling chamber 23. The smoke will not only be cleansed of undesirable substances, but it will be cooled before it enters the passage 24 in the mouth-piece I 4.

As shown more particularly in Fig. 2, two strands are coiled into cooperate spirals to substantially ll the chamber I5.

I claim:

A smoking pipe comprising a bowl, a stem and an enlargement connecting the bowl with the stem, said enlargement having a vertical filtering chamber and a conduit connecting the lower end of the chamber with the bowl, the stem having a conduit in communication with the upper end of said chamber, the upper end of said chamber being closed while the lower end is open, a sleeve having one end closed adapted to be inserted into the chamber for closing the lower open end thereof, said sleeve having a passage alining with the conduit connecting the bowl with the chamber and a spirally arranged filtering and absorbent strand having its convolutions compressed radially inwardly to form a removable unit, one end of the unit being tted into the sleeve so that said unit may be inserted or removed from the chamber by the sleeve, a portion of the conduit in the stem being expanded to provide a cooling chamber for the smoke, the upper end of the ltering unit extending across the inner end of the cooling chamber.

ROBERT H. OWEN. 

